Traditional Roof Construction Details

The rafters are the main load bearing elements of the roof.

Traditional roof construction details.

There are two basic methods of pitched roof construction. Gable end roof construction if the pitched roof is not a lean to but a normal gable roof we have to divide the total roof span by two in order to form two right angle triangles back to back. The overall construction of a traditional cut roof is to ensure that the load of the roof is evenly transmitted to the walls below. There are a couple of different methods for constructing pitched style roofs.

A truss roof using factory made trusses which are delivered to site complete and just erected. A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc. Every member of a traditional cut roof is individually cut and assembled on site. Pitched room traditional joinery traditionally roofs were constructed on site using sawn timber typically with all joints simply nailed together.

There are two basic types of roof construction. The timbers are often 400mm or so centres and vary in size according to span. They span from the wallplate to the ridge board providing a platform for the underlay battens and tiles. This can be determined by the size of the timbers or the size of the roof.

1 2 the total span is equal to the horizontal span that one rafter will cover. One pitched roof construction method is a cut roof method. Traditional or cut roofs usually comprise a series of sloping timbers rafters fixed to a wall plate at their feet and a ridge board or possibly a wall plate at their head. Traditional or cut roof the traditional option is steeply pitched rarely less than 35.

Flat roofs pitched or sloping roofs. This is more of a traditional manner in regards to cutting the timber while onsite and building up the roof by the use of rafters ridge boards joists and purlins among others. In this method there are joists and rafters.